netdev - Re: [PATCH 1/2] pcnet32: only allocate init

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Message-ID: <20070307192228.GA13273@linux-mips.org>
Date:	Wed, 7 Mar 2007 19:22:28 +0000
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	"Michael K. Edwards" <medwards.linux@...il.com>
Cc:	Don Fry <pcnet32@...izon.net>, jgarzik@...ox.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] pcnet32: only allocate init_block dma consistent

On Wed, Mar 07, 2007 at 08:35:30AM -0800, Michael K. Edwards wrote:

> >Price question: why would this patch make a difference under VMware? :-)
> 
> Moving the struct pcnet32_private from the GFP_DMA32 init_block to the
> GFP_KERNEL netdev allocation may be a win even on systems where
> GFP_DMA32 is normally cached, because the private area will get read
> ahead into cache when the netdev is touched.

GFP_* flags have no influence on caching or prefetching.

  Ralf
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